I own a couple plasmas yet...Panasonics, 57" and 42". Both still in (light) use and work perfect. GREAT televisions.
I'm fairly certain that my 4 Ariens snowblowers from the 1970's can't be topped. Hell, my bet is nobody owns a single one from the 70's let alone 4. They all run perfect. One is for show (nut and bolt restoration of my father's 1973...she's purty), the other three I picked up for free and got them into running condition intending to sell them...then it decided to not really snow the past 4 winters.
I own a 1970ish Homelite Super XL chainsaw (Old Blue)...runs great and looks even better.
I own a 1963ish Zenith MJ1035W 7 tube stereo radio...sort of one of the early mini-radios...works pretty damn good, still decodes stereo too.
Some pics, not mine specifically, but valid examples...
My dad's blower engine is painted black, but otherwise just as pretty.
Here's the radio...my parents had one when I was young but it died in the 1970's (nearby lightning strike fried it). I had been looking for another one for decades, didn't find one locally until just a couple years ago.
The chain saw...the saw in this pic has seen some use obviously. Mine doesn't have a mark on it.